/*
ajax请求函数模块
返回值: promise对象(异步返回的数据是: response.data)
 */
import axios from "axios";
// axios.defaults.withCredentials = true; // 允许跨域携带cookie
export default function ajax(url, data = {}, type = "GET") {
  return new Promise(function (resolve, reject) {
    // 执行异步ajax请求
    let promise;
    if (type === "GET") {
      // 准备url query参数数据
      let dataStr = ""; //数据拼接字符串
      Object.keys(data).forEach((key) => {
        dataStr += key + "=" + data[key] + "&";
      });
      if (dataStr !== "") {
        dataStr = dataStr.substring(0, dataStr.lastIndexOf("&"));
        url = url + "?" + dataStr;
      }
      // 发送get请求
      promise = axios.get(url);
    } else {
      // 发送post请求
      promise = axios.post(url, data);
    }
    promise
      .then(function (response) {
        // 成功了调用resolve()
        resolve(response.data);
      })
      .catch(function (error) {
        //失败了调用reject()
        reject(error.response);
      });
  });
}

/*
const response = await ajax()
const result = response.data

const resule = await ajax()
 */
